how al gore's explaining about president obama's debate performance. coming up. >> plus a warning before you enjoy that second cup of joe, frank, listen up, how it could harm your vision. >> i'm only on one. >>> and they are called man's best friend for a reason. why this pooch -- or what this pooch did when his owner was hospitalized. coming your way. ,, ,,,,,,,,,,,, >>> big week here in the bay area. check out fleet week. partly cloudy skies, cool, hoping for a little sunshine, too. we'll have more on that coming up. >>> and so far, so good, a nice friday morning on the roads. our bay area bridges checking in problem-free. traffic and weather together every 10 minutes. >>> thank you. well, researchers are recommending you limit how much caffeinated coffee you drink. their study found that people who drink at least three cups of coffee with caffeine a day had an increased risk of developing glaucoma. that could lead to blindness. the study involved more than 100,000 men and women. >>> now to a story of loyalty, courage and perseverance that can only c